Dielectric,mechanical and thermal properties of polymer/BaTiO3 composites for embedded capacitor |
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| Affiliation: | 1. Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Al. I. Cuza Univ., 11 Bv. Carol I, 700506 Iasi, Romania;2. Research Department, Faculty of Physics, Al. I. Cuza Univ., 11 Bv. Carol I, 700506 Iasi, Romania;3. National Institute of Research and Development for Technical Physics, Iasi 700050, Romania;1. Laboratory of Thin Film Techniques and Optical Test, School of Photoelectrical Engineering, Xi’an Technological University, Xi’an 710032, PR China;2. Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology, School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, PR China;1. State Key Laboratory of Information Photonics and Optical Communications & School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;3. State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;1. Center for Advanced Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;2. Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China;3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, United States;1. “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania;2. National Institute for Research and Development in Electrical Engineering ICPE-CA, 313 Splaiul Unirii, Bucharest 030138, Romania;1. State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structures, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi''an, Shaanxi, PR China;2. China Electronics Technology Group, Corp 20th Research Institute, Xi''an, 710068, PR China;3. Institute of High Pressure Physics of the Polish Academy of Sciences, ul. Sokolowska 29/37, 01-142, Warsaw, Poland;4. Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi''an, 710072, PR China;5. Department of Electronics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Krakow, Poland;6. Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland |
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| Abstract: | Barium titanate (BaTiO3) filled polymethylmethacrylate (PMMA) composites were prepared using the simple solution method followed by hot pressing. The content of BaTiO3 was varied from 0 to 65 vol.%. Scanning electron microscopy showed good dispersion and adhesion of BaTiO3 with the PMMA matrix. The dielectric constant of the composites increased significantly. There was weak dispersion in the dielectric constant of the composites (up to 45 vol.%) with frequency between 100 Hz and 15 MHz. The dissipation factor of the composites increased from 0.021 for pure PMMA to 0.029 for 45 vol.% composites. However, 65 vol.% composite showed dispersion in dielectric constant with increasing frequency and higher dissipation factor. The Lichtenecker equation agreed well with the experimental data. The microhardness and the glass transition temperature of the composites increased approximately 4.7-fold and 42 °C, respectively, compared to pure PMMA. The CTE of the 65 vol.% composite is close to that of copper. |
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